Machine for grinding hand-cards



(No Model.)

W. S. BURTON.

MAGHINE FOR GRINDING HAND GARIDS.

No. 357,975. Patented Feb. 15,1887.

J a E ATTORNEYS.

' UNITED STATES PATENT OFFICE.

WILLIAM S. BURTON, OF MARYVILLE, TENNESSEE.

MACHINE FOR GRINDING HAND-CARDS.

SPECIFICATION forming part of Letters Patent No. 357,975, dated February 15, 1887.

Application filed July 2, 1886.

T 0 all whom it may concern.-

Be it known that I, WILLIAM S. BURTON, of Maryville, in the county of Blount and Stat-e of Tennessee, have invented a new and useful Improvement in Machines for Grinding Hand-Cards, of which the following is a full, clear, and exact description.

This invention pertains to improvements in machines for grinding hand-cards; and it consists of the combination of parts, substantially as hereinafter described, and pointed out in the claim.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 represents a plan view, and Fig. 2 a side elevation, of a machine embodying my invention for grinding hand-cards, and showing a hand-card as under action in the machine.

A is the frame of the machine, which frame may be of any suitable construction and material. B is a main shaft carried by said frame and fitted with fast and loose pulleys b 0. Upon this shaft is secured the grinding cylinder 0, that may either be made of wood or iron coated with emery.

The shaft B is not simply rotated in its bearings, but has a reciprocating longitudinal movement therein, for the purpose of vibrating the rotating cylinder in direction of its length, to distribute or equalize the grinding action of the cylinder on the card. This vibratory motion is communicated to said cylinder bya rocking bar or lever, D, pivoted, as at d, and freely engaging at its one end with the shaft B and freely engaging, as by a slot, at its opposite end with an obliquely-arranged disk or wabbler, E, secured upon acounter or lower shaft, F, to which rotary motion is imparted from the main shaft, as by pulleys e f and band 9, or otherwise. This forms a very simple and efficient means for vibrating the rotating grinding-cylinder.

G is a rocking shaft, parallel with the shafts B and F and having mounted on it a rod or arm, H, to which is secured a spring and screw or other suitable clamp, I, that holds the hand-card J by its handle while said card is Serial No. 206,935. (No model.)

being ground, as required. The clamp I is adjustable up and down the arm H, and may be secured, when adjusted, by a set-screw, h, whereby the hand-card may be made to occupy different angular positions relatively to the grinding-cylinder, thus providing fol-grinding the wires of the card to any desired angle or point,.and the length of stroke of the card over the cylinder is or may be changed; but this latter effect is better provided for by the means used to rock the shaft G. These means consist of a bar, K, secured at its one end to the shaft G and engaging, by a slot, t, in its other end, with a crank-pin, Z, carried by a disk or plate, L, secured upon the shaft F, said crank-pin being adjustable to occupy different positions or distances from the center of said shaft as, forinstance, by changing it from one hole to another, in, in the disk or body L of the crank, arranged at different distances from the center of the shaft F.

Upon the top of the frame Aare adjustable guides M, for guiding the card during its motion over the grinding-cylinder,

The machine is adapted to grind one, two, or more cards at the same time, or cards of variable length and width. When the card to be ground is once adjusted and secured, the grinding of it by the machine is automatic, and the machine will grind it more perfectly and in much less time than is now done in grinding it by hand, besides saving the customary labor-ordinarily a man or a boy-and insuring a more equal pressure of the card on the grinding-cylinder.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination, with the rocking shaft G, having an attached arm, H, and the clamp 1, adjustable along or upon said arm, of the slotted bar K and a revolving crank adapted to engage with said bar and having its length of throw adjustable, substantially as and for the purposes specified.

"WILLIAM S. BURTON.

\Vitnesses:

WILLIAM E. PARHAM, HENRY O. KAISER. 

